From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 18CB2C43460 for ; Thu, 20 May 2021 15:10:53 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DA7AE6121E for ; Thu, 20 May 2021 15:10:52 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DA7AE6121E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 13DE96E1BE; Thu, 20 May 2021 15:10:42 +0000 (UTC) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4B9CC6E222; Thu, 20 May 2021 15:10:38 +0000 (UTC) IronPort-SDR: lClOXr194kNU9DLEMestjxumYqtwGIz4axiATG6/PMQ8bgfyD856xjzRkYZ6QvaScgNZ2DA2Kk Uhl/Eg5TvJIg== X-IronPort-AV: E=McAfee;i="6200,9189,9989"; a="222341193" X-IronPort-AV: E=Sophos;i="5.82,313,1613462400"; d="scan'208";a="222341193" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 May 2021 08:10:02 -0700 IronPort-SDR: ezOoIMHB9Y5Os/yrnhHkLeiwI9OkjERwT6P5ovvnl6lIVAw4R9r+aHB2zHp7rCemrJnnqVltKw c+gtaBYfFr9Q== X-IronPort-AV: E=Sophos;i="5.82,313,1613462400"; d="scan'208";a="395728160" Received: from cbjoerns-mobl1.ger.corp.intel.com (HELO thellst-mobl1.intel.com) ([10.249.254.247]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 May 2021 08:10:00 -0700 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [RFC PATCH 2/5] drm, drm/i915: Move the memcpy_from_wc functionality to core drm Date: Thu, 20 May 2021 17:09:44 +0200 Message-Id: <20210520150947.803891-3-thomas.hellstrom@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520150947.803891-1-thomas.hellstrom@linux.intel.com> References: <20210520150947.803891-1-thomas.hellstrom@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= , =?UTF-8?q?Christian=20K=C3=B6nig?= , Daniel Vetter Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Memcpy from wc will be used as well by TTM memcpy. Move it to core drm, and make the interface do the right thing even on !X86. Cc: Christian König Cc: Daniel Vetter Cc: Dave Airlie Signed-off-by: Thomas Hellström --- drivers/gpu/drm/Makefile | 2 +- drivers/gpu/drm/drm_drv.c | 2 + .../drm/{i915/i915_memcpy.c => drm_memcpy.c} | 31 +++++++------- drivers/gpu/drm/i915/Makefile | 1 - .../gpu/drm/i915/gem/i915_gem_execbuffer.c | 4 +- drivers/gpu/drm/i915/gem/i915_gem_object.c | 5 ++- drivers/gpu/drm/i915/gt/selftest_reset.c | 7 ++-- drivers/gpu/drm/i915/gt/uc/intel_guc_log.c | 11 ++--- drivers/gpu/drm/i915/i915_cmd_parser.c | 4 +- drivers/gpu/drm/i915/i915_drv.c | 2 - drivers/gpu/drm/i915/i915_gpu_error.c | 8 ++-- drivers/gpu/drm/i915/i915_memcpy.h | 34 --------------- .../drm/i915/selftests/intel_memory_region.c | 7 ++-- include/drm/drm_memcpy.h | 41 +++++++++++++++++++ 14 files changed, 83 insertions(+), 76 deletions(-) rename drivers/gpu/drm/{i915/i915_memcpy.c => drm_memcpy.c} (84%) delete mode 100644 drivers/gpu/drm/i915/i915_memcpy.h create mode 100644 include/drm/drm_memcpy.h diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index a91cc7684904..f3ab8586c3d7 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -18,7 +18,7 @@ drm-y := drm_aperture.o drm_auth.o drm_cache.o \ drm_dumb_buffers.o drm_mode_config.o drm_vblank.o \ drm_syncobj.o drm_lease.o drm_writeback.o drm_client.o \ drm_client_modeset.o drm_atomic_uapi.o drm_hdcp.o \ - drm_managed.o drm_vblank_work.o + drm_managed.o drm_vblank_work.o drm_memcpy.o \ drm-$(CONFIG_DRM_LEGACY) += drm_agpsupport.o drm_bufs.o drm_context.o drm_dma.o \ drm_legacy_misc.o drm_lock.o drm_memory.o drm_scatter.o \ diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 3d8d68a98b95..351cc2900cf1 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -40,6 +40,7 @@ #include #include #include +#include #include #include @@ -1041,6 +1042,7 @@ static int __init drm_core_init(void) drm_connector_ida_init(); idr_init(&drm_minors_idr); + drm_memcpy_init_early(); ret = drm_sysfs_init(); if (ret < 0) { diff --git a/drivers/gpu/drm/i915/i915_memcpy.c b/drivers/gpu/drm/drm_memcpy.c similarity index 84% rename from drivers/gpu/drm/i915/i915_memcpy.c rename to drivers/gpu/drm/drm_memcpy.c index 1b021a4902de..03688425a096 100644 --- a/drivers/gpu/drm/i915/i915_memcpy.c +++ b/drivers/gpu/drm/drm_memcpy.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: MIT /* * Copyright © 2016 Intel Corporation * @@ -22,16 +23,11 @@ * */ +#ifdef CONFIG_X86 #include #include -#include "i915_memcpy.h" - -#if IS_ENABLED(CONFIG_DRM_I915_DEBUG) -#define CI_BUG_ON(expr) BUG_ON(expr) -#else -#define CI_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr) -#endif +#include "drm/drm_memcpy.h" static DEFINE_STATIC_KEY_FALSE(has_movntdqa); @@ -94,23 +90,23 @@ static void __memcpy_ntdqu(void *dst, const void *src, unsigned long len) } /** - * i915_memcpy_from_wc: perform an accelerated *aligned* read from WC + * drm_memcpy_from_wc: perform an accelerated *aligned* read from WC * @dst: destination pointer * @src: source pointer * @len: how many bytes to copy * - * i915_memcpy_from_wc copies @len bytes from @src to @dst using + * drm_memcpy_from_wc copies @len bytes from @src to @dst using * non-temporal instructions where available. Note that all arguments * (@src, @dst) must be aligned to 16 bytes and @len must be a multiple * of 16. * * To test whether accelerated reads from WC are supported, use - * i915_memcpy_from_wc(NULL, NULL, 0); + * drm_memcpy_from_wc(NULL, NULL, 0); * * Returns true if the copy was successful, false if the preconditions * are not met. */ -bool i915_memcpy_from_wc(void *dst, const void *src, unsigned long len) +bool drm_memcpy_from_wc(void *dst, const void *src, unsigned long len) { if (unlikely(((unsigned long)dst | (unsigned long)src | len) & 15)) return false; @@ -123,24 +119,23 @@ bool i915_memcpy_from_wc(void *dst, const void *src, unsigned long len) return false; } +EXPORT_SYMBOL(drm_memcpy_from_wc); /** - * i915_unaligned_memcpy_from_wc: perform a mostly accelerated read from WC + * drm_unaligned_memcpy_from_wc: perform a mostly accelerated read from WC * @dst: destination pointer * @src: source pointer * @len: how many bytes to copy * - * Like i915_memcpy_from_wc(), the unaligned variant copies @len bytes from + * Like drm_memcpy_from_wc(), the unaligned variant copies @len bytes from * @src to @dst using * non-temporal instructions where available, but * accepts that its arguments may not be aligned, but are valid for the * potential 16-byte read past the end. */ -void i915_unaligned_memcpy_from_wc(void *dst, const void *src, unsigned long len) +void drm_unaligned_memcpy_from_wc(void *dst, const void *src, unsigned long len) { unsigned long addr; - CI_BUG_ON(!i915_has_memcpy_from_wc()); - addr = (unsigned long)src; if (!IS_ALIGNED(addr, 16)) { unsigned long x = min(ALIGN(addr, 16) - addr, len); @@ -155,8 +150,9 @@ void i915_unaligned_memcpy_from_wc(void *dst, const void *src, unsigned long len if (likely(len)) __memcpy_ntdqu(dst, src, DIV_ROUND_UP(len, 16)); } +EXPORT_SYMBOL(drm_unaligned_memcpy_from_wc); -void i915_memcpy_init_early(struct drm_i915_private *dev_priv) +void drm_memcpy_init_early(void) { /* * Some hypervisors (e.g. KVM) don't support VEX-prefix instructions @@ -166,3 +162,4 @@ void i915_memcpy_init_early(struct drm_i915_private *dev_priv) !boot_cpu_has(X86_FEATURE_HYPERVISOR)) static_branch_enable(&has_movntdqa); } +#endif diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile index cb8823570996..998606b7f49f 100644 --- a/drivers/gpu/drm/i915/Makefile +++ b/drivers/gpu/drm/i915/Makefile @@ -61,7 +61,6 @@ i915-y += i915_drv.o \ # core library code i915-y += \ dma_resv_utils.o \ - i915_memcpy.o \ i915_mm.o \ i915_sw_fence.o \ i915_sw_fence_work.o \ diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c index 297143511f99..77285e421fb8 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c @@ -10,6 +10,7 @@ #include #include +#include #include "display/intel_frontbuffer.h" @@ -28,7 +29,6 @@ #include "i915_sw_fence_work.h" #include "i915_trace.h" #include "i915_user_extensions.h" -#include "i915_memcpy.h" struct eb_vma { struct i915_vma *vma; @@ -2503,7 +2503,7 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb, !(batch->cache_coherent & I915_BO_CACHE_COHERENT_FOR_READ); pw->batch_map = ERR_PTR(-ENODEV); - if (needs_clflush && i915_has_memcpy_from_wc()) + if (needs_clflush && drm_has_memcpy_from_wc()) pw->batch_map = i915_gem_object_pin_map(batch, I915_MAP_WC); if (IS_ERR(pw->batch_map)) { diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c index c8953e3f5c70..f1eb857fa172 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_object.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c @@ -24,6 +24,8 @@ #include +#include + #include "display/intel_frontbuffer.h" #include "i915_drv.h" #include "i915_gem_clflush.h" @@ -31,7 +33,6 @@ #include "i915_gem_mman.h" #include "i915_gem_object.h" #include "i915_globals.h" -#include "i915_memcpy.h" #include "i915_trace.h" static struct i915_global_object { @@ -374,7 +375,7 @@ i915_gem_object_read_from_page_iomap(struct drm_i915_gem_object *obj, u64 offset PAGE_SIZE); src_ptr = src_map + offset_in_page(offset); - if (!i915_memcpy_from_wc(dst, (void __force *)src_ptr, size)) + if (!drm_memcpy_from_wc(dst, (void __force *)src_ptr, size)) memcpy_fromio(dst, src_ptr, size); io_mapping_unmap(src_map); diff --git a/drivers/gpu/drm/i915/gt/selftest_reset.c b/drivers/gpu/drm/i915/gt/selftest_reset.c index 8784257ec808..92ada67a3835 100644 --- a/drivers/gpu/drm/i915/gt/selftest_reset.c +++ b/drivers/gpu/drm/i915/gt/selftest_reset.c @@ -5,9 +5,10 @@ #include +#include + #include "gem/i915_gem_stolen.h" -#include "i915_memcpy.h" #include "i915_selftest.h" #include "intel_gpu_commands.h" #include "selftests/igt_reset.h" @@ -99,7 +100,7 @@ __igt_reset_stolen(struct intel_gt *gt, memset_io(s, STACK_MAGIC, PAGE_SIZE); in = (void __force *)s; - if (i915_memcpy_from_wc(tmp, in, PAGE_SIZE)) + if (drm_memcpy_from_wc(tmp, in, PAGE_SIZE)) in = tmp; crc[page] = crc32_le(0, in, PAGE_SIZE); @@ -135,7 +136,7 @@ __igt_reset_stolen(struct intel_gt *gt, PAGE_SIZE); in = (void __force *)s; - if (i915_memcpy_from_wc(tmp, in, PAGE_SIZE)) + if (drm_memcpy_from_wc(tmp, in, PAGE_SIZE)) in = tmp; x = crc32_le(0, in, PAGE_SIZE); diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c index c36d5eb5bbb9..f045e42be6ca 100644 --- a/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c +++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_log.c @@ -5,9 +5,10 @@ #include +#include + #include "gt/intel_gt.h" #include "i915_drv.h" -#include "i915_memcpy.h" #include "intel_guc_log.h" static void guc_log_capture_logs(struct intel_guc_log *log); @@ -295,13 +296,13 @@ static void guc_read_update_log_buffer(struct intel_guc_log *log) /* Just copy the newly written data */ if (read_offset > write_offset) { - i915_memcpy_from_wc(dst_data, src_data, write_offset); + drm_memcpy_from_wc(dst_data, src_data, write_offset); bytes_to_copy = buffer_size - read_offset; } else { bytes_to_copy = write_offset - read_offset; } - i915_memcpy_from_wc(dst_data + read_offset, - src_data + read_offset, bytes_to_copy); + drm_memcpy_from_wc(dst_data + read_offset, + src_data + read_offset, bytes_to_copy); src_data += buffer_size; dst_data += buffer_size; @@ -569,7 +570,7 @@ int intel_guc_log_relay_open(struct intel_guc_log *log) * it should be present on the chipsets supporting GuC based * submisssions. */ - if (!i915_has_memcpy_from_wc()) { + if (!drm_has_memcpy_from_wc()) { ret = -ENXIO; goto out_unlock; } diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c index 5b4b2bd46e7c..98653f1a2b1d 100644 --- a/drivers/gpu/drm/i915/i915_cmd_parser.c +++ b/drivers/gpu/drm/i915/i915_cmd_parser.c @@ -24,12 +24,12 @@ * Brad Volkin * */ +#include #include "gt/intel_engine.h" #include "gt/intel_gpu_commands.h" #include "i915_drv.h" -#include "i915_memcpy.h" /** * DOC: batch buffer command parser @@ -1152,7 +1152,7 @@ static u32 *copy_batch(struct drm_i915_gem_object *dst_obj, if (src) { GEM_BUG_ON(!needs_clflush); - i915_unaligned_memcpy_from_wc(dst, src + offset, length); + drm_unaligned_memcpy_from_wc(dst, src + offset, length); } else { struct scatterlist *sg; void *ptr; diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 122dd297b6af..0df9dd62c717 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -72,7 +72,6 @@ #include "i915_drv.h" #include "i915_ioc32.h" #include "i915_irq.h" -#include "i915_memcpy.h" #include "i915_perf.h" #include "i915_query.h" #include "i915_suspend.h" @@ -325,7 +324,6 @@ static int i915_driver_early_probe(struct drm_i915_private *dev_priv) mutex_init(&dev_priv->pps_mutex); mutex_init(&dev_priv->hdcp_comp_mutex); - i915_memcpy_init_early(dev_priv); intel_runtime_pm_init_early(&dev_priv->runtime_pm); ret = i915_workqueues_init(dev_priv); diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index 99ca242ec13b..ee11920fbea5 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -34,6 +34,7 @@ #include #include +#include #include #include "display/intel_csr.h" @@ -46,7 +47,6 @@ #include "i915_drv.h" #include "i915_gpu_error.h" -#include "i915_memcpy.h" #include "i915_scatterlist.h" #define ALLOW_FAIL (GFP_KERNEL | __GFP_RETRY_MAYFAIL | __GFP_NOWARN) @@ -255,7 +255,7 @@ static bool compress_init(struct i915_vma_compress *c) } c->tmp = NULL; - if (i915_has_memcpy_from_wc()) + if (drm_has_memcpy_from_wc()) c->tmp = pool_alloc(&c->pool, ALLOW_FAIL); return true; @@ -295,7 +295,7 @@ static int compress_page(struct i915_vma_compress *c, struct z_stream_s *zstream = &c->zstream; zstream->next_in = src; - if (wc && c->tmp && i915_memcpy_from_wc(c->tmp, src, PAGE_SIZE)) + if (wc && c->tmp && drm_memcpy_from_wc(c->tmp, src, PAGE_SIZE)) zstream->next_in = c->tmp; zstream->avail_in = PAGE_SIZE; @@ -395,7 +395,7 @@ static int compress_page(struct i915_vma_compress *c, if (!ptr) return -ENOMEM; - if (!(wc && i915_memcpy_from_wc(ptr, src, PAGE_SIZE))) + if (!(wc && drm_memcpy_from_wc(ptr, src, PAGE_SIZE))) memcpy(ptr, src, PAGE_SIZE); dst->pages[dst->page_count++] = ptr; cond_resched(); diff --git a/drivers/gpu/drm/i915/i915_memcpy.h b/drivers/gpu/drm/i915/i915_memcpy.h deleted file mode 100644 index 3df063a3293b..000000000000 --- a/drivers/gpu/drm/i915/i915_memcpy.h +++ /dev/null @@ -1,34 +0,0 @@ -/* SPDX-License-Identifier: MIT */ -/* - * Copyright © 2019 Intel Corporation - */ - -#ifndef __I915_MEMCPY_H__ -#define __I915_MEMCPY_H__ - -#include - -struct drm_i915_private; - -void i915_memcpy_init_early(struct drm_i915_private *i915); - -bool i915_memcpy_from_wc(void *dst, const void *src, unsigned long len); -void i915_unaligned_memcpy_from_wc(void *dst, const void *src, unsigned long len); - -/* The movntdqa instructions used for memcpy-from-wc require 16-byte alignment, - * as well as SSE4.1 support. i915_memcpy_from_wc() will report if it cannot - * perform the operation. To check beforehand, pass in the parameters to - * to i915_can_memcpy_from_wc() - since we only care about the low 4 bits, - * you only need to pass in the minor offsets, page-aligned pointers are - * always valid. - * - * For just checking for SSE4.1, in the foreknowledge that the future use - * will be correctly aligned, just use i915_has_memcpy_from_wc(). - */ -#define i915_can_memcpy_from_wc(dst, src, len) \ - i915_memcpy_from_wc((void *)((unsigned long)(dst) | (unsigned long)(src) | (len)), NULL, 0) - -#define i915_has_memcpy_from_wc() \ - i915_memcpy_from_wc(NULL, NULL, 0) - -#endif /* __I915_MEMCPY_H__ */ diff --git a/drivers/gpu/drm/i915/selftests/intel_memory_region.c b/drivers/gpu/drm/i915/selftests/intel_memory_region.c index c85d516b85cd..6bb399e9be78 100644 --- a/drivers/gpu/drm/i915/selftests/intel_memory_region.c +++ b/drivers/gpu/drm/i915/selftests/intel_memory_region.c @@ -6,6 +6,8 @@ #include #include +#include + #include "../i915_selftest.h" #include "mock_drm.h" @@ -20,7 +22,6 @@ #include "gem/selftests/mock_context.h" #include "gt/intel_engine_user.h" #include "gt/intel_gt.h" -#include "i915_memcpy.h" #include "selftests/igt_flush_test.h" #include "selftests/i915_random.h" @@ -901,7 +902,7 @@ static inline void igt_memcpy(void *dst, const void *src, size_t size) static inline void igt_memcpy_from_wc(void *dst, const void *src, size_t size) { - i915_memcpy_from_wc(dst, src, size); + drm_memcpy_from_wc(dst, src, size); } static int _perf_memcpy(struct intel_memory_region *src_mr, @@ -925,7 +926,7 @@ static int _perf_memcpy(struct intel_memory_region *src_mr, { "memcpy_from_wc", igt_memcpy_from_wc, - !i915_has_memcpy_from_wc(), + !drm_has_memcpy_from_wc(), }, }; struct drm_i915_gem_object *src, *dst; diff --git a/include/drm/drm_memcpy.h b/include/drm/drm_memcpy.h new file mode 100644 index 000000000000..dbf52cd43382 --- /dev/null +++ b/include/drm/drm_memcpy.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2019 Intel Corporation + */ + +#ifndef __DRM_MEMCPY_H__ +#define __DRM_MEMCPY_H__ + +#include + +#ifdef CONFIG_X86 +bool drm_memcpy_from_wc(void *dst, const void *src, unsigned long len); +void drm_unaligned_memcpy_from_wc(void *dst, const void *src, unsigned long len); + +/* The movntdqa instructions used for memcpy-from-wc require 16-byte alignment, + * as well as SSE4.1 support. drm_memcpy_from_wc() will report if it cannot + * perform the operation. To check beforehand, pass in the parameters to + * drm_can_memcpy_from_wc() - since we only care about the low 4 bits, + * you only need to pass in the minor offsets, page-aligned pointers are + * always valid. + * + * For just checking for SSE4.1, in the foreknowledge that the future use + * will be correctly aligned, just use drm_has_memcpy_from_wc(). + */ +#define drm_can_memcpy_from_wc(dst, src, len) \ + drm_memcpy_from_wc((void *)((unsigned long)(dst) | (unsigned long)(src) | (len)), NULL, 0) + +#define drm_has_memcpy_from_wc() \ + drm_memcpy_from_wc(NULL, NULL, 0) + +void drm_memcpy_init_early(void); + +#else + +#define drm_memcpy_from_wc(_dst, _src, _len) (false) +#define drm_can_memcpy_from_wc(_dst, _src, _len) (false) +#define drm_has_memcpy_from_wc() (false) +#define drm_unaligned_memcpy_from_wc(_dst, _src, _len) WARN_ON(1) +#define drm_memcpy_init_early() do {} while (0) +#endif /* CONFIG_X86 */ +#endif /* __DRM_MEMCPY_H__ */ -- 2.31.1 From mboxrd@z Thu Jan 1 00:00:00 1970 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mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 48F8A6F476; Thu, 20 May 2021 15:10:40 +0000 (UTC) Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4B9CC6E222; Thu, 20 May 2021 15:10:38 +0000 (UTC) IronPort-SDR: lClOXr194kNU9DLEMestjxumYqtwGIz4axiATG6/PMQ8bgfyD856xjzRkYZ6QvaScgNZ2DA2Kk Uhl/Eg5TvJIg== X-IronPort-AV: E=McAfee;i="6200,9189,9989"; a="222341193" X-IronPort-AV: E=Sophos;i="5.82,313,1613462400"; d="scan'208";a="222341193" Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 May 2021 08:10:02 -0700 IronPort-SDR: ezOoIMHB9Y5Os/yrnhHkLeiwI9OkjERwT6P5ovvnl6lIVAw4R9r+aHB2zHp7rCemrJnnqVltKw c+gtaBYfFr9Q== X-IronPort-AV: E=Sophos;i="5.82,313,1613462400"; d="scan'208";a="395728160" Received: from cbjoerns-mobl1.ger.corp.intel.com (HELO thellst-mobl1.intel.com) ([10.249.254.247]) by orsmga006-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 May 2021 08:10:00 -0700 From: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Thu, 20 May 2021 17:09:44 +0200 Message-Id: <20210520150947.803891-3-thomas.hellstrom@linux.intel.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210520150947.803891-1-thomas.hellstrom@linux.intel.com> References: <20210520150947.803891-1-thomas.hellstrom@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [RFC PATCH 2/5] drm, drm/i915: Move the memcpy_from_wc functionality to core drm X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?UTF-8?q?Thomas=20Hellstr=C3=B6m?= , 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